"a black spot"
In life we do a lot of good deeds, do things for the better of others.
But what's sad? it's when you commit a mistake that will make
all this good things you've done forgotten.
It's like a black spot on a white sheet of paper.
no matter how white or clean the paper was, the black spot will be the
one to stand out.Buts that's a sad reality we just have to face.
But still remember a mistake wont define a person and always
seek good to others.